Willis mitchell



(No Model.)-

W. MITCHELL.

ELECTRIG SMOOTHING IRON. N0. 457,164. Patented Aug. 4, 1891.

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Y UNrTED STATES PATENT OFFICE.

IILLIS MITCHELL, MALDEN, MASSACHUSETTS, ASSIGNOR T() THE BUTTER- FIELD-MI-TCHELL ELECTRIC HEATING COMPANY.

ELECTRIC SMOOTHING-IRON.

SPECIFICATION forming part of Letters Patent No. 457,164, dated August 4, 1891. Application led November 21, 1890. Serial No. 872,148. (No modelJ To all whom t may concern,.- to the bottom of the body B and hold the Beit known that I, VILLIS MITCHELL, a wires above the bottom. If preferred, as citizen of the United States, residing at Malshown in Fig. 5, the bar or core maybe tubuden, in the county of Middlesex and State ot lar throughout, a single support F, also tubu- 55 5 Massachusetts,haveinvented certain new and lar, being employed. \Vhen the screw E is useful Improvements in Electric Smoothingwithdrawn, the entire heating apparatus may Irons; andIdo hereby declare the following' to be slipped out very easily; but this screw is be a full, clear, and exact description ot the not relied on to sustain the weight. The invention, such as will enable others skilled screw h may be dispensed with, the plate B 6o io in the art to which it appertains to make and and bar or slug D being cast integral, as inuse the same. dicated in Fig'. 5.

This invention relates to tailors? irons and The chief advantage of holding the wire laundr -irons which are heated by removable above the bottom of the iron is that in ironcoils or spirals of wire forming part of an elecing after very damp sponging, which is often 6 5 I 5 tric circuit. necessary, the wire willbe less cooled by con- The obj ects of said invention are to increase duction and the current of electricity required the eflieiency of the heating devices and to to heat the device will be less. I do not, howimprove the means of attachment and detachever, depend wholly on the heat generated by ment, so that these operations may be conresistanee, havingI found that when the wire 7o 2o venientlyeifected without impairing security. is wound at intervals, leaving each coil or In the accompanying drawings, Figure l spiral in a space about teu or twelve times its represents a vertical longitudinal section of a own width, an intense heat is generated in tailors iron provided with myimprovements. the inclosed bar, slug, or core, although this Fig. 2 represents in detail perspective the bar, latter is not in circuit. By this way of wind- 75 25 slug, or core, the wire wound thereon, and the ing I am enabled to heat the slug or core to a front plate and supports. Fig. f3 represents red heat without ever having red-hot wires a detail side elevation of the bar support and or overheating them at all. I can put eight plate. Fig. et represents a vertical transverse irons in series, and thus heat them all withsection on the line x of Fig. l. Fig. 5 repout using more than four ampres of current. 8o 3o rcsents a view, similar to Fig. l, of a moditi- Moreover, I do not use wires small enough to cation. Fig. 6 represents a perspective view obtain sufficient heat by resistance alone.

of a laundry-iron provided with my improve- As shown in Fig. I, besides the iirst windment, the core and wire being partly drawn ing on the core or slug, I wind the wire outout. side ot that in the same manner, again and 85 35 A designates the handle, and B the hollow again interposing insulating-strips Gbetween body, of the iron. said layers or windings. This of course in- C designates the heatingwire, which may tensies the effect. Theiron is heated mainly be covered with insulating material or left by the radiation and conduction ot the slug` naked if wound carefully, and forms part of or bar aforesaid. o 4o an electric circuit, the ends c c of said wire Having thus described my invention, whatI extending through the shell ot' body B, as declaim as new, and desire to secure by Letters scribed. This wire is wound on an iron slug, Patent, is core, or bar D, which extends from end to end l. A smoothing-iron for tailors and laundry of said body within the latter, and is rigidly use having a hollow body and removable 95 45 attached to the removable rear plate B of plate, in combination with a core removable said body, preferably by means of a screw l). with said plate and having a support or sup- The forward end of said slug, core, or bar is ports which rest on the bottom of said body, recessed and internally screw-threaded at tl and a wire wound about said core and formto receive another screw E, which enters ing part of an electric circuit, the said wire zoo 5o through a hole in the front end of the iron. being held above the said bottom, substan- Rigid supports F extend down from said bar tially as set forth.

2. In combination with the hollou7 body of u sm0otl1ing-iron and a Wire forming part of au electric circuit which is used for heating the same, a core D, which is screw-tapped at one end and attached at the other to a removable plate forming part of said body, and further provided with a support or supports F, the Wire bein g wound on and supported by said core, and the core-plate, Wire, and support being removable together when said screw is withdrawn, substantially' as set forth.

3. In an electrically-heated smoothing-iron, the combination of 2t metallic bar or core in- In testimonywhereof I aiiix my signatu re in 2o presence of two witnesses.

WILLIS MITCHELL. Witnesses:

P. R. TRLPP, WILLIAM WALDEN. 

